How many people can a 4 stall restroom trailer serve?
Four stalls comfortably cover 80 to 150 guests across a single day, more if the event runs longer and traffic spreads out. For construction crews, OSHA 1926.51(c)(1) sets the baseline: one toilet for 20 workers or fewer, then one seat and one urinal per 40 workers as headcount climbs. A 4 stall unit lands past what most small crews need, which is why we also stock 2 stall restroom trailers for tighter budgets and 8 stall restroom trailers for bigger festivals. If you are not sure which size fits your headcount, our porta potty calculator guide walks through the math. Weddings near downtown Knoxville and corporate sites out toward Farragut, 17.0 miles southwest, both fall into this middle bracket often enough that the 4 stall size is our most requested restroom trailer configuration.
What does a 4 stall restroom trailer include?
Standard units bring flush toilets, sinks with running water, mirrors and climate control, a step up from a deluxe flushable porta potty but simpler than a luxury restroom trailer with finished stalls and sound. ADA Standards section 404.2.3 sets minimum clear door opening width at 32 inches, and section 403.5.1 requires a 36 inch clear route, so if guests need accessible entry we pair the trailer with an ADA accessible porta potty unit rather than retrofit a stall. Handwashing setups follow 29 CFR 1910.141(d)(2), meaning soap and towels or a dryer, not sanitizer alone; add a handwashing station rental if the trailer sinks won't cover peak flow. Most Knoxville deliveries also carry a delivery charge separate from the weekly rate, and options like a shower trailer rental or extra portable sink rental units run alongside the same drop.
Where can a 4 stall restroom trailer be placed on site?
Placement needs firm, level ground and enough clearance for the delivery truck to back in and level the trailer. ADA Standards section 302.1 calls for stable, slip resistant surfacing anywhere accessible units sit, and a 60 inch turning circle under section 304.3.1 matters if a stall is marked accessible. Our porta potty placement guide covers ground prep in more detail. If the trailer sits in a public right of way anywhere in Knoxville, placement needs confirming with the city; we do not guess at that call. For sites without power access, pair the trailer with a light tower rental or a temporary power pole, and if the job needs debris hauled too, a roll-off dumpster rental usually gets ordered on the same visit.
| duration | low | typical | high |
|---|---|---|---|
| day | 175 | 800 | 2500 |
| week | 150 | 1397 | 1650 |
| weekend | 900 | 2000 | 3000 |
| event (multi-day) | 2499 | 3500 | 3899 |
Rates depend on trim level, hookups and how far the delivery travels; a site 10.9 miles north near Halls costs more to service than one inside city limits. For a full cost breakdown across unit types, see restroom trailer rental cost or the general porta potty rental cost page. Weddings often check wedding restroom rental pricing separately since guest counts and rental length vary more than at a job site.
Does a 4 stall trailer need a permit in Knoxville?
Permit rules vary by property and whether the unit sits on a public street or private lot. We have not verified a blanket citywide rule, so confirm placement with the city before delivery. Our porta potty permit requirements page walks through what to ask.
Can a 4 stall restroom trailer run without hookup to water or power?
Most units carry an onboard tank and battery lighting, but longer events do better with a hookup. Ask about generator options when you request a quote; we can also pair a trailer with a temporary power pole for multi-day setups.
How is a 4 stall restroom trailer cleaned during a multi-day rental?
ANSI/PSAI Z4.3 sets a baseline of one service visit per week for lighter use, but multi-day events usually need daily servicing. See how often are porta potties cleaned for the general schedule we follow.
Is a 4 stall restroom trailer better than renting several porta potties?
For weddings and staffed events, yes, since guests get running water and privacy a standard unit does not offer. For bare job sites meeting OSHA counts, standard units from our portable toilet rental lineup often cost less.
What is the delivery area for a 4 stall restroom trailer from Knoxville?
We deliver across Knoxville and out to towns like Maryville, 19.0 miles south, and Sevierville, 28.1 miles east. Check our service areas page for the full list before booking.
Next step
Get a delivery date
Tell us the address, the dates and the headcount. We size the order and confirm the route.